I have a number of new Mercedes ML Series Trip Computers A163 540 52 11 I they have a 630.00 retail price and I'm selling them for 75.00 each with
5.00 for priority shipping.I have sold over 100 of them on eBay with instructions on how to install it yourself in any ML that didn't come from the factory with one . Although they can also replace any defective unit that did come with one. To view a tour of the functions of the overhead onboard computer go to this link
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you would like a 620 kb email with adobe instructions on how to installthe unit please feel free to email me at snipped-for-privacy@kc.rr.com